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Kiyoung Lee, Robert Hahn, Marco Altomare, Elena Selli and Patrik Schmuki Intrinsic Au Decoration of Growing TiO2 Nanotubes and Formation of a High-Efficiency Photocatalyst for H2 Production Advanced Materials 25

Version of Record online: 21 AUG 2013 | DOI: 10.1002/adma.201302581

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Electrochemical anodization of low-concentration (0.02–0.2 at% Au) TiAu alloys in a fluoride electrolyte leads to self-organized TiO2 nanotubes that show a controllable, regular in situ decoration with elemental Au nanoclusters of ≈5 nm in diameter. The degree of self-decoration can be adjusted by the Au concentration in the alloy and the anodization time. Such Au particle decorated tubes show a high activity for photocatalytic H2 production from ethanol solutions.

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